MOSFET Arithmetic Product Wave Detector Circuit

Published:2011/8/23 23:41:00 Author:Robert | Keyword: MOSFET, Arithmetic, Product, Wave, Detector | From:SeekIC

The circuit shown in the picture a MOSFET with dual grid electrodes: the G1's normal signal input is used to receive the SSB signal from the IF amplifier; the G2's local oscillator signal would control the MOSFET's switch. The audio low-pass filter is also in the output (drain electrode) circuit to limit the redundant IF signal from the demodulator output.The picture shows the MOSFET arithmetic product wave detector circuit.Notes: in this circuit the MOSFET's source circuit has two capacitance (C1 and C2). Typically one is RF capacitance and the other is AF capacitance. Although using the modern capacitors, this distinction is not very necessary.



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